baber/WOPTO huggingface dataset:
Patent GB-690594-A (GB)
Title: Improvements in the production of urea
IPC: C07C273/16
Filed: 1951-04-03
Abstract: Crystalline urea is obtained by washing solid urea containing biuret with an aqueous saturated solution of urea thereby substantially reducing the biuret impurity.  The solid urea treated may be that obtained by reacting ammonia with carbon dioxide at elevated temperature and pressure and either concentrating the resultant urea solution to a melt which is solidified by being sprayed by means of an air current or centrifuged or cooling the urea solution to cause crystallization of the urea.  The mashing may be effected by mixing the solid urea with the urea solution, by spraying the solution over a layer of the urea or by leading the solid urea and urea solution through a mixing spiral.  The extractant is preferably urea solution containing only a small amount of biuret, e.g. less than 1 per cent, withdrawn from the high pressure reactor in the urea synthesis, and diluted to give a saturated solution at room temperature.  With such a solution, the biuret content of the solid urea may be reduced to 0.1 to 0.2 per cent, while a further washing with biuret-free urea solution reduces the impurity to below 0.01 per cent.  Examples are given.
Patent GB-347814-A (GB)
IPC: G05D13/00
Filed: 1930-03-10
Abstract: 347,814. Preventing inductive disturbance. VIARD, G., 26, Rue de la PÚpiniÞre, Paris. March 10, 1930, No. 7766. Convention date, March 23, 1929. [Class 40 (iv).] In an arrangement for detecting defects in a group of telephone, telegraph or other signalling lines by connecting the points of balance of the lines, e.g. the middle points of terminal transformers, at one or each end of the lines directly to a common point which is grounded through a battery and an indicating or warning device, means are provided for balancing the lines with respect to earth which also serve to reduce cross-talk and effects due to external disturbances. The arrangement may be applied to the transformers of individual pairs, or the phantom windings of the transformers of phantomed quads, or to the points of balance in other methods of phantoming, and in ghost circuits. As shown in Fig. 2, L1 .. L4 each represent a phantomed quad and M1 .. M4 the middle points of the phantom windings at one end. The points M1 .. M4 are connected through fixed and variable impedances Z1 .. Z4, dZ1 .. dZ4 to a common point O connected through an indicator 5 and battery 6 to ground. The impedances dZ1 .. dZ4 are adjusted to balance the various quads and thus diminish cross-talk and external interference. Specification 307,458, [Class 37, Electricity, Measuring &c.], is referred to.
Patent GB-935621-A (GB)
Title: Method of producing and developing electrostatic latent images
IPC: G03G9/12
Filed: 1960-03-04
Abstract: 935,621. Electrophotographic processes and apparatus. COMMONWEALTH OF AUSTRALIA. March 4, 1960 [March 5, 1959], No. 7783/60. Classes 98 (1) and 98 (2). A method of producing and developing electrostatic latent images comprises subjecting a solid surface, which has previously been stored in a cool dark place, without the use of an applied charge, to a light or heat pattern and developing with a developer comprising an electrically insulating liquid having pigment particles suspended therein of a size below half a micron. The solid surface may comprise a photoconductive material such as zinc oxide in a suitable insulating base coated, for example, on paper, or may comprise an ordinary metal surface such as lead foil, or tin or aluminium foil or plates. The developer comprises, for example, Kromal Blue, Monastral Blue, or Organic Red, in an insulating liquid such as toluene, an aliphatic hydrocarbon solvent or lighting kerosine. The pigment may be ground in a ball mill to obtain the desired small grain size. Triggered developers may be used as disclosed in British Specification 879,464 and control and fixing agents may be added to the developer as disclosed in British Specification 835,044. No fixing agent is required, however, with a rough zinc oxide surface. Apparatus for carrying out the above method, as shown, comprises a table 1, a resilient pad 2, a sheet 3 (having said solid surface), a transparency 4, a glass plate 5 which is doubly hinged at 7 and 9 to the table 1, a support column 13 for a source of intense radiation-e.g. mercury lamps, or an electric radiator-and a dish 15 containing the fine grain developer 16.
Patent GB-347816-A (GB)
Title: Improvements in tablet or like dispensing devices
IPC: B65D83/04
Filed: 1930-03-10
Abstract: 347,816. Cases for dispensing tablets. OSBORN, H., 8, College Road, West Ealing, London. March 10, 1930, No. 7798. [Class 18.] Tablets e.g. of the kind which deteriorate when exposed to air such as effervescent tablets and which are sold in a glass, metal, celluloid, or bakelite tube with one end open, are dispensed by mounting the tube a in an aperture c in a bracket d provided with an indiarubber gasket g to make an airtight joint having a bifurcated arm f which supports the middle of the tube. The lowest tablet is delivered by pulling out a drawer h by means of its handle h<1> against the pressure of a spring m, the tablet falling into a glass &c. held below the drawer. The bracket d is rotatable on a fixed bracket q, and is held in the upright position by means of a spring-pressed ball r engaging a notch s. A washer o keeps the drawer airtight. In an alternative form the glass &c. tube a is enclosed in a metal tube integral with the bracket d, slotted to permit inspection and provided with a screw-cap and a spring to bear against the closed end of the glass &c. tube. The metal tube may also be carried by the bracket d.
Patent GB-907246-A (GB)
Title: Improvements in and relating to nuclear reactors and to fuel elements therefor
Inventor: INGLIS GEORGE HARRISON
IPC: G21C19/02
Filed: 1959-03-06
Abstract: 907,246. Fuel elements. PARSONS & CO. Ltd., C. A. Feb. 18, 1960 [March 6, 1959], No. 7809/59. Class 39 (4). Fuel elements are coupled end-to-end to form a string by a flexible cable 9, e.g. of stainless steel, whereby the elements may move out of alignment with each other when a string is lifted out of a reactor core through an angled loading shoot. As shown, the lower end of an upper fuel element has a conical fitting 5a which normally seats within a recess in a fitting 5b provided at the upper end of a lower fuel element, the two elements normally being in axial alignment. The lower end of the cable 9 is secured to the fitting 5b by a washer 16 whereas the upper end carries a collar 13 slidable in a space 12 in the fitting 5a, the collar being arrested by a shoulder 14 when a lifting effort is applied to the upper fuel element whereby the effort is transmitted to the lower element. Specification 826,228 is referred to.
Patent GB-668061-A (GB)
Title: Improvements in or relating to hot-gas engines
IPC: F02G1/055
Filed: 1947-03-21
Abstract: 668,061. Hot. gas engines. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. March 21. 1947 [June 16, 1944], No. 7825/47. Class 7(i) In a closed cycle hot gas engine a pump which circulates a liquid cooling medium, for example water, through the engine cooler is driven by means which continue to operate after the supply of heat has been cut off. The Figure shows part of a hot gas engine comprising a heater 11 heated by a burner 13 and a cooler 12, 1.6 through which liquid cooling medium is circulated by pump 18. The pump is driven by an electric motor 19 controlled by a switch 20 which makes and breaks the electrical supply to the motor. The fuel supply to the burner is controlled by a cock 15. The cock 15 carries a collar 22 and the switch 20 a collar 23 which both have a cut-away portion. As long as the cock 15 is open the switch 20 cannot be opened. The fuel can only be turned on if the electric motor has been switched on. In a modification the electric motor is controlled by a bi-metallic switch and the circulation of the cooling medium is dependent on the temperature of the heater. In a further modification a circulating pump for a liquid cooling medium is driven by the 'engine crank shaft through a freewheel coupling. When the engine stops the pump keeps operating due to its own inertia or to that of a fly-wheel associated with it. The rotating parts of the pump may be of large mass. The Specification as open to inspection under Sect. 91 refers also to use of air as a cooling medium. This subject-matter does not appear in the Specification as accepted.
Patent GB-589725-A (GB)
Title: Improvements in or relating to clutches suitable for automobiles, industrial machinery, marine engines, and the like
IPC: F16H57/10
Filed: 1945-03-28
Abstract: 589,725. Friction clutches; epicyclic variablespeed gearing. METTAM, J, E. March 28, 1945, No. 7865. [Class 80 (ii)] In a clutch of the type having a sun wheel on the driven shaft engaging planetary pinions which are mounted on the driving member and braked to effect drive, the sun wheel is slidable to engage the driving member positively on partial or full synchronisation. As shown, the flywheel 3 on the driving shaft 1 of an automobile carries on spindles 6 axially slidable planetary pinions 8 urged to the left by the springs 16 of a pressure plate 14 so as to bring coned braking surfaces 11 into contact with coacting surfaces 12 in a plate 4 fixed to the flywheel 3. A sun wheel 24 splined on the driven shaft 21 engages the pinions 8 and is slidable under the action of a spring 32 to engage also teeth 25 on the plate 4. Clutch disengagement is effected by an operating lever 31 engaging a collar 26 on the sun wheel 24 and, through a sleeve 36, the pressure plate 14 to move them to the right. On moving the lever 31 to allow the clutch to engage, the pinions 8 come into braking engagement with their seatings and tend to take up the drive before the sun 24 mates with the teeth 25.
Patent GB-1154538-A (GB)
Title: Esterifying Viscous Reaction Mixtures
IPC: C07C69/82
Filed: 1968-02-19
Abstract: 1,154,538. Esterification of terephthalic acid. MOBIL OIL CORP. 19 Feb., 1968 [19 April, 1967], No. 7922/68. Heading C2C. [Also in Division C3] A continuous esterification process comprises introducing a highly viscous reaction mixture comprising a uniform dispersion of solid terephthalic acid particles in a glycol containing 2-10 carbon atoms into a narrow esterification zone at a flow rate which is substantially uniform across the entire cross-sectional area of the narrow inlet of the zone, at a temperature substantially below the esterification threshold temperature of the components and below the point of substantial vaporization of the glycol, transporting the reaction mixture through the length of the esterification zone while heating all portions of the mixture to esterification temperature substantially uniformly and rapidly during passage through the zone while providing a mechanical wiping section adjacent to a heated wall of the zone. A catalyst may be present. The preferred glycol is ethylene glycol of which 1-2 mols are preferably used per mol of acid.
Patent GB-281521-A (GB)
Title: Improvements in and relating to the control of vehicle head lights
IPC: B60Q1/124
Filed: 1927-03-22
Abstract: 281,521. Kellner, A. March 22, 1927. Vehicle lamps, directing. - Vehicle head lights or spot lights are swivelled to right or left from the driver's seat by means of a flexible transmission member with toothed gearing at each end. In the form shown a casing 13 carried on the steering- pillar contains a toothed segment 12 gearing with a pinion 11 secured to a flexible shaft 4, the segment 12 being movable by a hand lever 15 resiliently engaging a positioning-rack 17. At the other end of the shaft 4, Fig. 2, is a similar pinion 3 and rack 2 connected with the vertical lamp spindle 9 mounted in an eye 7 of a carrier rod 8. The casing 13 extends rearwardly and the lever 15 is bent so as to lie at one side of the wheel. The casing may however lie at the side of the wheel the lever 15 then being straight. The flexible shaft may be replaced for part of its length by a rigid shaft centrally mounted in the steering pillar.
Patent GB-121078-A (GB)
Title: Improvements in Boxes or Receptacles.
Inventor: JAMES REGINALD WILLIAM
IPC: B65D85/672
Filed: 1918-05-13
Abstract: 121,078. James, R. W., (Remington Typewriter Co.). May 13, 1918. Knock-down boxes &c.-A box &e. for typewriter ribbon spools &c. comprises end disks 3, 4 of pasteboard &c. and a flexible metal band or body 2 having flanges and shoulders 7, 8, which form grooves receiving the end disks. The disks are clamped in position by passing a tongue 11, struck out of one end of the band, through a hole in an extension from the other end and then bending the tongue over. In a modification, the band 2 is made without the shoulders 8 and, therefore, without grooves.
Patent GB-1486963-A (GB)
Title: Liquid fuel lamps
IPC: F21L19/00
Filed: 1976-02-18
Abstract: 1486963 Lamps; wick burners SHELTON PROPERTIES Ltd 18 Feb 1976 [26 Feb 1975] 8070/75 Headings F4R and F4T A liquid fuel burning lamp comprises a wick burner surrounded by a lantern element 22, both mounted on a fuel reservoir 10, an inner transparent tube 54 forming a combustion gas outlet leading to an outlet tube 52 passing through a top aperture 44 in the lantern element 22 and a top cap structure providing an air inlet through the aperture 44 to the annular space around the outside of the tubes 52 and 54 and a combustion gas outlet from the outlet tube 52. The cap structure comprises a cap 51 integral with the outlet tube 52 and a cap 57 on top of the outlet tube and secured thereto by handle 66. The tube 54, which may be of glass, is supported by springs 55 on a frusto-conical member 53 secured to the outlet tube 52. Air enters the lamp through the gap between the cap 51 and the lantern element 22, passes down the annular space between the lantern element and the tubes 52, 54 and enters combustion chamber 35 through apertures 36. Combustion gases leave the chamber 35 through an upper aperture 38 and pass through the tubes 54, 52 and apertures 56 in the tube 52 to leave the lamp beneath cylindrical wall 63 of the cap 57 and through apertures 62 in the cap. The lens element 22, which may be of polycarbonate or glass and may be coloured, is formed with a central convex belt 45 and prismatic ribs 46, 47 to direct most of the light horizontally, and a large number of internal vertical ribs 48. Lugs 21 on the lantern element engage a burner support, formed by plates 14, 15, which also has a threaded connection to the reservoir 10. The burner may be of the kind specified in patent Specification 1,486,962. If periodic flashing is desired holes 29 are provided in wick tube 24 so that periodically an explosive mixture accumulates in the combustion chamber and is ignited by a small flame at the top of the wick 25.
Patent GB-878521-A (GB)
Title: Improvements in or relating to a method of and apparatus for continuously applying liquids or liquid suspensions to ceramic and glassware articles
IPC: B05D1/28
Filed: 1958-03-13
Abstract: 878,521. Reservoir pens. HERAEUS G.m.b.H., W. C. March 13, 1958 [March 13, 1957], No. 8088/58. Class 146(3). [Also in Group XXIII] Liquids or liquid suspensions are supplied to a pad applicator 8 by capillary action from a reservoir in which the level of the liquid in the reservoir is at or below the base of the applicator. The pad 8 may be of sponge or felt. The applicator may be in the form of a pen or ball-point pen wherein the supply of liquid is effected and controlled by means of felt or a similar porous material.
Patent GB-1147722-A (GB)
Title: Threaded stud having locking key
Inventor: JAMES CULLEN EVERETT
IPC: F16B39/34
Filed: 1967-02-21
Abstract: 1,147,722. Threaded studs. NEWTON INSERT CO. 21 Feb., 1967, No. 8094/67. Heading F2H. A threaded stud comprises a body 17, Fig. 1, having first and second external threaded portions, e.g. 19 and 20, each located on opposite sides of a locking key 18 which is drivable in an axial groove 22 to cut through the thread of the bore of a carrier part 12 in which the stud is to be screwed, the groove and key extending into the material of the body 17 to a depth radially inwardly of the major diameters of the threads of both threaded portions. The threaded portions 19 and 20 may constitute the opposite ends of a single, continuous screw thread or, as shown, be two distinct threads separated by an unthreaded portion 21. The groove 22 has an undercut cross-section at the location of the key shaped to retain the key and has a non- undercut cross-section at the location of the first threaded portion. The groove has a curved portion (26, Fig. 3, not shown) which enables engagement of a driving tool with an outer surface of the key. The key may have a generally triangular or circular cross-section.
Patent GB-667509-A (GB)
Title: Mixture heating devices for internal combustion engines
IPC: F02M1/00
Filed: 1950-03-31
Abstract: 667,509. Vaporizers. TRENT, S. J. March 31, 1950, No. 8141/50. Class 7(iii) In a mixture heating device of the kind comprising a gasket 1 inserted between carburetter and intake manifold flanges and fitted with a heating coil 10 connected to terminals 11, 12 in circuit with a switch and a low-voltage electrical supply such as a motor-car battery, the coil which is retained in an annular or helical groove 9 of the gasket, which may be of insulating material or metal, partly or completely surrounds the gasket passage 7 and projects into the passage without offering undue obstruction to the flow of carburetted mixture. Two semi-circular coils may be used in an annular groove. In a modification, two coils are each retained in a groove and connected in parallel or several coils are connected in series.
Patent GB-380375-A (GB)
Title: Improvements in or relating to clothes-pegs
IPC: D06F55/02
Filed: 1932-03-18
Abstract: 380,375. Clothes pegs. FREI, J. R., Kilchberg, Zurich, Switzerland. March 18, 1932, No. 8160. Convention date, Feb. 22. [Class 44.] The clamping portions of a clothes peg are provided, by dipping or painting, with a hard, glass-like, non-porous coating. Suitable substances mentioned are cellulose, or derivatives such as viscose, celluloid, and nitro-cellulose lacquer.
Patent GB-798887-A (GB)
Title: Improvements relating to the packing of cheese curd into cheese moulds
Inventor: STEIN THOMAS CLARK DUDGEON
IPC: A01J25/11
Filed: 1956-03-15
Abstract: 798,887. Packing curd into moulds. DAIRY SUPPLY CO., Ltd. March 14, 1957 [March 15, 1956], No. 8174/66. Class 84. In packing cheese curd into moulds, a support for the moulds moves through positions for loading the moulds, charging the moulds with curd, compacting the curd and removing the moulds from the support. Moulds 7 are loaded in succession on a rotating table 1, a pivoted hopper 9 is lowered on each mould, curd is delivered through a shoot 11 to a registering hopper and the curd is compacted ; preferably the moulds pass through the cycle of charging and compacting more than once prior to removal from the table. The hoppers 9 have adjoining, floared edges 9<SP>2</SP>. Specification 777,946 is referred to.
Patent GB-548840-A (GB)
Title: Improvements in or relating to dynamo electric machines
IPC: H02K19/30
Filed: 1941-06-28
Abstract: 548,840. Self-excited alternators. MAWDSLEY'S, Ltd., MINCHIN, C. W; H., and PARSONS, A. J. June 28, 1941, No. 8176. [Class 35] Constant terminal voltage over a wide range of load is obtained by provision for moving away from the neutral axis one or more of the commutator brushes 3, 4 of a self-excited alternator of the kind illustrated, or one having a single armature winding, so that the flux distortion due to load causes a progressive change in excitation voltage with a predetermined brush setting.
Patent GB-473067-A (GB)
Title: Sound apparatus
IPC: G01S1/72
Filed: 1937-04-19
Abstract: 473,067. Locating sounds and like vibrations. CHAMBERS, W. A., and ROBINSON, W. A. April 19, 1937, No. 8178/36. [Class 118 (ii)] A sound locator comprising two pairs of horns fitted with microphones which are rotatable in vertical and horizontal planes is coupled to a cathode ray tube through rectifying devices, so that, when a sound has been brought into focus, movement of the source can be seen by movement of the spot across the screen. Selenium cells may be arranged to respond to movement of the spot to sound alarms or to control movements of searchlights &c. The pairs of microphones 3a, 3b, and 3c, 3d are coupled respectively to the opposing pairs of plates 6 and 7. as shown in the figure. The outputs from each pair of microphones may be connected in opposition and the resulting currents fed through rectifier bridges to the deflecting elements of the tube. Amplifiers may be included in the circuit and the tube may be biassed so that the spot disappears when no microphone is being energized.
Patent GB-1062956-A (GB)
Title: Composition of polyvinyl chloride and polybutadiene-1,3
IPC: C08L9/00
Filed: 1965-02-25
Abstract: Compositions comprise (A) 100 parts by weight of a vinyl chloride polymer; (B) 1 to 15 parts by weight of a polybutadiene-1,3 having 20 to 80 mole per cent of 1,4-cis units; and (C) 3 to 50 parts by weight per 100 of the sum of (A) and (B) of an interpolymer of acrylonitrile, butadiene and styrene.  The vinyl chloride polymer may be polyvinyl chloride or a vinyl chloride/vinyl acetate copolymer. The compositions may also comprise stabilizers, e.g. lead stearate and cadmium stearate, and lubricants, e.g. butyl stearate, and may be used for making articles by injection moulding and extrusion.
Patent GB-495683-A (GB)
Title: Process for the preservation of helianthus or like tubers on their removal from the soil
IPC: A01N3/00
Filed: 1938-03-17
Abstract: Helianthus and other tubers which on their removal from the soil will keep for a short time only are preserved by washing, drying and coating with talc or graphite or both.  The coating may be effected by placing the tubers in a box containing a small quantity of the coating material, and shaking or rolling it.  For transport, the coated tubers may be packed in boxes lined on the interior with talc or graphite, or both.
Patent GB-609855-A (GB)
Title: Improvements in or relating to wheels
IPC: B60B19/00
Filed: 1946-03-16
Abstract: 609,855. Vehicle wheels. ROBERTS (ENGINEERS), Ltd., and FUDGE, C. S. March 16, 1946, No. 8249. [Class 144 (i)] A wheel for trucks and like vehicles comprises a pair of dished discs 4 having flanged inner and outer edges to engage the stepped ends of the axle-boss 7 and the flanged (or recessed) edges of a rubber tyre 1 respectively. The tyre-base is reinforced by a ring 2 which may be welded, as at 11, to one of the wheeldiscs.
Patent GB-117434-A (GB)
Title: Pipe Couplings.
Inventor: HORIUCHI HIROSUKE
IPC: F16L19/02
Filed: 1918-05-17
Abstract: 117,434. Horiuchi, H. May 17, 1918. Butt joints. - The outer edges of the pipes 1 and the inner edges of the flanges 2 are cut away at an angle of 45 degrees so that when the pipes are together an annular groove of square section is formed. A rubber or like packing-ring 5 placed in the groove is compressed and completely fills the groove when the union is screwed up. A similar construction is employed with screw union.
Patent GB-312730-A (GB)
Title: Improvements in and relating to systems of electric motor control
IPC: B66C13/24
Filed: 1928-03-19
Abstract: 312,730. British Thomson-Houston Co., Ltd., Harris, F. H., Nixon, L. R., and Peacock, J. V. March 19, 1928. Electric braking ; varying field.-In the control of a hoist motor G, Fig. 4, working on a constant current supply and having its field J connected to exciting mains R through a negative boosting machine L, two booster field windings N, P respectively energized from the motor armature and from the separate excitation act in conjunction during the hoisting operation; during the lowering operation the separately excited booster field P acts alone until the required speed is attained, after which the other field N is switched in for the purpose of reversing the motor torque and thus slowing and stopping the descent. Fig. 5 shows speed-torque curves H corresponding to the hoisting period, K to the first period of lowering, and M to the second period.